Fig 1.
Shearer cable structure: (A) cross-section view; (B) anatomical view.
Fig 2.
Parameterized modeling of shearer cables based on Rihno Grasshopper: (A) display of 3D models on the Rihno interface; (B) Visual programming in the Grasshopper interface.
Fig 3.
Helical curve unfolding diagram.
Fig 4.
Determination of intra and inter layers tangency:(A) tangency within the layer; (B) tangency between layers.
Fig 5.
Flowchart for the determination of intra-layer and inter-layer tangency.
Fig 6.
Construction of irregular surfaces: (A) cross-section; (B) generate tangent curves and fill surfaces; (C) fit and sweep inner surfaces; (D) fit and sweep outer surfaces.
Fig 7.
Models of insulation and sheath.
Fig 8.
Cable models with varying pitch diameter ratios at different stranding levels.
Fig 9.
Conductor models with different stranding directions.
Fig 10.
Conductors with distinct monofilament units.
Fig 11.
Tensile test: (A) rubber insulation and sheath; (B) tinned copper strands.
Table 1.
Mechanical parameters of insulation and sheath.
Table 2.
Mechanical parameters of strands.
Fig 12.
Stress -strain curves of strands: (A) control strands; (B) power strands.
Fig 13.
Schematic diagram of bilinear isotropic hardening model.
Fig 14.
The mechanical model of cable bending.
Fig 15.
Bending simulation schematic of the shearer cable: (A) geometric diagram; (B) process of bending.
Fig 16.
Simulation process and stress changes of strand.
Fig 17.
Maximum equivalent stress nephogram: (A) whole rubber; (B) power insulation; (C) small sheath of control; (D) Outer sheath.
Fig 18.
Maximum equivalent stress nephogram: (A) whole conductors; (B) power conductors; (C) ground conductors; (D) control conductors.
Fig 19.
Stress distribution along the arc length direction: (A) schematic diagram of cable ultimate bending; (B) shear force and bending moment diagram of an ideal simply supported beam; (C) Stress nephogram along the arc length direction of strands; (D) Stress -arc length curves along the arc length direction of strands.
Fig 20.
Scatter plots with fitted curves for maximum equivalent stress of strands: (A) Primary pitch diameter ratios; (B) Secondary pitch diameter ratios.
Fig 21.
Trend nephograms of strands with varying pitch diameter ratios at different stranding levels:(A) power strands; (B) control strands.
Fig 22.
S-N curve with modified ultimate tensile strength.
Fig 23.
Calculation and analysis process of stress fatigue life.
Fig 24.
Fatigue life nephograms: (A) power strands; (B) control strands.
Fig 25.
Cable bending test machine.
Fig 26.
Comparison of numerical simulation and bending test on the motion state of coal mining machine cables: (A) Schematic diagram of bending test in coal industry standards; (B) Comparison of motion states.
Fig 27.
Anatomy of shearer cable after bending test.
Fig 28.
Stress of power conductors under bending conditions: (A) counter stranding LRL; (B) parallel stranding LLL.
Fig 29.
Schematic diagram of multi-layers stranding structure.
Fig 30.
Axial tension of strands with different stranding directions: (A) tension 1 mm; (B) tension 30 mm.
Fig 31.
Axial tension of strands composed of different monofilaments.
Fig 32.
Bending stress with the conductors structure of 10(2+8) and strands structure of 48×0.5 mm.